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ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors.
Sensors (Basel) 2019; 19(19)S

Abstract

Pd nanoparticle-functionalized, xIn2O3 (x = 0.05, 0.1, and 0.15)-loaded ZnO nanofibers were synthesized by an electrospinning and ultraviolet (UV) irradiation method and assessed for their hydrogen gas sensing properties. Morphological and chemical analyses revealed the desired morphology and chemical composition of the synthesized nanofibers. The optimal gas sensor namely Pd-functionalized, 0.1In2O3-loaded ZnO nanofibers showed a very strong response to 172-50 ppb hydrogen gas at 350 °C, which is regarded as the optimal sensing temperature. Furthermore, the gas sensors showed excellent selectivity to hydrogen gas due to the much lower response to CO and NO2 gases. The enhanced gas response was attributed to the excellent catalytic activity of Pd to hydrogen gas, and the formation of Pd/ZnO and In2O3/ZnO heterojunctions, ZnO-ZnO homojunction, as well as the formation of PdHx. Overall, highly sensitive and selective hydrogen gas sensors can be produced based on a simple methodology using a synergistic effect from Pd functionalization and In2O3 loading in ZnO nanofibers.

Authors+Show Affiliations

Department of Materials Science and Engineering, Inha University, Incheon 22212, Korea. 22171057@inha.edu.Department of Materials Science and Engineering, Inha University, Incheon 22212, Korea. kjhhb5331@hanyang.ac.kr.Department of Materials Science and Engineering, Inha University, Incheon 22212, Korea. 22171286@inha.edu.The Research Institute of Industrial Science, Hanyang University, Seoul 04763, Korea. alisonmirzaee@yahoo.com. Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz 71557-13876, Iran. alisonmirzaee@yahoo.com.The Research Institute of Industrial Science, Hanyang University, Seoul 04763, Korea. hyounwoo@hanyang.ac.kr. Division of Materials Science and Engineering, Hanyang University, Seoul 04763, Korea. hyounwoo@hanyang.ac.kr.Department of Materials Science and Engineering, Inha University, Incheon 22212, Korea. sangsub@inha.ac.kr.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31581664

Citation

Lee, Jae-Hyoung, et al. "Ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors." Sensors (Basel, Switzerland), vol. 19, no. 19, 2019.
Lee JH, Kim JH, Kim JY, et al. Ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors. Sensors (Basel). 2019;19(19).
Lee, J. H., Kim, J. H., Kim, J. Y., Mirzaei, A., Kim, H. W., & Kim, S. S. (2019). Ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors. Sensors (Basel, Switzerland), 19(19), doi:10.3390/s19194276.
Lee JH, et al. Ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors. Sensors (Basel). 2019 Oct 2;19(19) PubMed PMID: 31581664.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors. AU - Lee,Jae-Hyoung, AU - Kim,Jae-Hun, AU - Kim,Jin-Young, AU - Mirzaei,Ali, AU - Kim,Hyoun Woo, AU - Kim,Sang Sub, Y1 - 2019/10/02/ PY - 2019/08/27/received PY - 2019/09/27/revised PY - 2019/09/30/accepted PY - 2019/10/5/entrez PY - 2019/10/5/pubmed PY - 2019/10/5/medline KW - In2O3 KW - Pd KW - ZnO KW - gas sensor KW - hydrogen gas KW - sensing mechanism JF - Sensors (Basel, Switzerland) JO - Sensors (Basel) VL - 19 IS - 19 N2 - Pd nanoparticle-functionalized, xIn2O3 (x = 0.05, 0.1, and 0.15)-loaded ZnO nanofibers were synthesized by an electrospinning and ultraviolet (UV) irradiation method and assessed for their hydrogen gas sensing properties. Morphological and chemical analyses revealed the desired morphology and chemical composition of the synthesized nanofibers. The optimal gas sensor namely Pd-functionalized, 0.1In2O3-loaded ZnO nanofibers showed a very strong response to 172-50 ppb hydrogen gas at 350 °C, which is regarded as the optimal sensing temperature. Furthermore, the gas sensors showed excellent selectivity to hydrogen gas due to the much lower response to CO and NO2 gases. The enhanced gas response was attributed to the excellent catalytic activity of Pd to hydrogen gas, and the formation of Pd/ZnO and In2O3/ZnO heterojunctions, ZnO-ZnO homojunction, as well as the formation of PdHx. Overall, highly sensitive and selective hydrogen gas sensors can be produced based on a simple methodology using a synergistic effect from Pd functionalization and In2O3 loading in ZnO nanofibers. SN - 1424-8220 UR - https://www.unboundmedicine.com/medline/citation/31581664/ppb_Level_Selective_Hydrogen_Gas_Detection_of_Pd_Functionalized_In2O3_Loaded_ZnO_Nanofiber_Gas_Sensors_ L2 - http://www.mdpi.com/resolver?pii=s19194276 DB - PRIME DP - Unbound Medicine ER -